import sun.text.normalizer.UCharacter;

import java.util.ArrayList;

public class Test1 {
    public static void main(String[] args) {
        ArrayList<Character> list =new ArrayList<>();
        String s1="Wclcome to bit";
        String s2="come";
        for(int i=0;i<s1.length();i++)
        {
            char ch=s1.charAt(i);
            if(!s2.contains(ch+""))
            {
                list.add(ch);
            }
        }
        for(Character x:list)
        {
            System.out.print(x+" ");
        }
    }
}
